Late start of carbide tooling, rapid development

Carbide since the beginning of the 1920s , with its "widia" ( like diamond ) the name of the market by the German scientists since the invention and production of tungsten tensile modulus get first industrial applications , replacing the expensive diamond then stretched mode .

Our Carbide started late , but rapid development . Currently, carbide die basically serialization and standardization. In recent years the development of the situation, the theoretical study of carbide tooling and design has a deeper and more science, applied more widely .

In the development of new alloy materials on behalf of a few years ago to drill for the hot iron and nickel . Metallurgical materials such as Hunan province developed the equivalent of YG, YG20, YG25 the strength and toughness of cemented carbide, received good results in for cold heading die , cold extrusion die and so on. Tianjin Institute on behalf of the iron-nickel carbide drill also developed a considerable YG (15-20) of carbide tooling materials, standard parts in the roll forging , cold heading steel ball YG20 quite effective with respect .

In recent years, new research is popular fine grain , ultra-fine grain , and even gradient nanocrystalline carbide and carbide . There are gradient cemented carbide composition gradient , gradient structure , in addition to the molten metal is also useful to produce osmotic gradient cemented carbide processing methods , such as the top of the gradient cemented carbide hammer .

Fine grain and ultrafine grain carbide also available, such as fine-grained YGS drawing dies while drawing <φlmm wire , is three times the normal drawing mode .

In addition, cast- inlaid carbide hot die , and achieved good results in terms of rolling and wire rod rolling .


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